4-(2-Pyrazinylamino)benzoic acid trifluoroacetate

4-(4-Bromo-2-chlorophenoxy)butanoic acid

4-(4-Bromophenyl)-2-phenylthiazole-5-carboxylic acid

4-(4-Fluorophenyl)-4-oxobutanenitrile

4-(5-Bromo-2-methoxyphenyl)thiazol-2-amine

4-(Bromomethyl)-5-methyl-3-p-tolylisoxazole

4-Amino-6-methoxyquinoline

4-Amino-7,8-dichloroquinoline

4-Bromo-1-(4-fluorophenyl)-3-methyl-1H-pyrazol-5-amine

4-Bromo-3-chloroquinoline

4-Bromo-8-fluoroquinoline

4-Chloro-6,8-dibromo-2-methylquinoline

4-Ethyl-6-(1-piperazinyl)pyrimidine dihydrochloride hydrate

4-Hydroxy-2,7,8-trimethylquinoline

4-Iodo-6-methoxypyrimidine